package com.xuemeng.exception;


import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;


@ControllerAdvice
public class GlobalDefaultExceptionHandler {

        @ExceptionHandler(value = Exception.class)
        public ModelAndView defaultErrorHandler(HttpServletRequest req, Exception e) {
//      // If the exception is annotated with @ResponseStatus rethrow it and let
//      // the framework handle it - like the OrderNotFoundException example
//      // at the start of this post.
//      // AnnotationUtils is a Spring Framework utility class.
//      if (AnnotationUtils.findAnnotation(e.getClass(), ResponseStatus.class) != null)
//          throw e;
//
//      // Otherwise setup and send the user to a default error-view.
//      ModelAndView mav = new ModelAndView();
//      mav.addObject("exception", e);
//      mav.addObject("url", req.getRequestURL());
//      mav.setViewName(DEFAULT_ERROR_VIEW);
//      return mav;

                //打印异常信息：
                e.printStackTrace();
                System.out.println("GlobalDefaultExceptionHandler.defaultErrorHandler()");

                /*
                 * 返回json数据或者String数据：
                 * 那么需要在方法上加上注解：@ResponseBody
                 * 添加return即可。
                 */

                /*
                 * 返回视图：
                 * 定义一个ModelAndView即可，
                 * 然后return;
                 * 定义视图文件(比如：error.html,error.ftl,error.jsp);
                 *
                 */


                ModelAndView mav = new ModelAndView();
                mav.addObject("exception", e);
                mav.addObject("url", req.getRequestURL());
                mav.setViewName("error/errordeal");

                if (e instanceof org.apache.shiro.authz.UnauthorizedException) {
                        mav.setViewName("error/unauthorized");
                }
                if (e instanceof org.apache.shiro.authz.AuthorizationException) {
                        mav.setViewName("error/unauthorized");
                }

                return mav;


        }
}

